Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.00≤f1/f≤1.50, 1.70≤n5≤2.20, −2.00≤f3/f4≤2.00; 0.50≤(R13+R14)/(R13−R14)≤10.00; 1.70≤n7≤2.20, where f1 denotes a focal length of the first lens; f denotes a focal length of the camera optical lens; n5 denotes a refractive index of the fifth lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; R13 denotes a curvature radius of the object-side surface of the seventh lens; R14 denotes a curvature radius of the image-side surface of the seventh lens; n7 denotes a refractive index of the seventh lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, particular,to a camera optical lens suitable for handheld devices, such as smartphones and digital cameras, and imaging devices, such as monitors or PClenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes seven lenses. Specifically, the camera optical lens 10includes, from an object side to an image side: an aperture S1, a firstlens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifthlens L5, a sixth lens L6 and a seventh lens L7. An optical element suchas an optical filter GF can be arranged between the seventh lens L7 andan image surface Si.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, and the sixth lens L6 are made of plastic material. The fifthlens L5 and the seventh lens L7 are made of glass material.

A focal length of the camera optical lens is defined as f, a focallength of the first lens L1 is defined as f1, and the camera opticallens 10 should satisfy a condition of 1.00≤f1/f≤1.50, which fixes apositive refractive power of the first lens L1. If a lower limit of aset value is exceeded, although it benefits the ultra-thin developmentof lenses, the positive refractive power of the first lens L1 will betoo strong, problem like aberration is difficult to be corrected, and itis also unfavorable for wide-angle development of lenses. On thecontrary, if an upper limit of the set value is exceeded, the positiverefractive power of the first lens becomes too weak, and it is thendifficult to develop an ultra-thin lens. Preferably, the camera opticallens 10 further satisfies a condition of 1.03≤f1/f≤1.49.

A refractive index of the fifth lens L5 is defined as n5, and the cameraoptical lens 10 should satisfy a condition of 1.70≤n5≤2.20, which fixesa refractive index of the fifth lens L5. Within this range, adevelopment towards ultra-thin lenses would facilitate correcting theproblem of an aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 1.71≤n5≤2.15.

A focal length of the third lens L3 is defined as f3, a focal length ofthe fourth lens L4 is defined as f4, and the camera optical lens 10should satisfy a condition of −2.00≤f3/f4≤2.00, which fixes a ratio ofthe focal length of the third lens L3 and the focal length of the fourthlens L4. The appropriate ratio of focal length makes it possible thatthe optical lens module has the better imaging quality and the lowersensitivity. Preferably, the camera optical lens 10 further satisfies acondition of −1.96≤f3/f4≤1.98.

A curvature radius of the object-side surface of the seventh lens L7 isdefined as R13, a curvature radius of the image-side surface of theseventh lens L7 is defined as R14, and the camera optical lens 10 shouldsatisfy a condition of 0.50≤(R13+R14)/(R13−R14)≤10.00, which specifies ashape of the seventh lens L7. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 0.61≤(R13+R14)/(R13−R14)≤9.94.

A refractive index of the seventh lens L7 is defined as n7, and thecamera optical lens 10 should satisfy a condition of 1.70≤n7≤2.20, whichfixes a refractive index of the seventh lens L7. Within this range, adevelopment towards ultra-thin lenses would facilitate correcting theproblem of an aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 1.71≤n7≤2.11.

When the focal length of the camera optical lens 10 of the presentinvention, a focal length of each lens, the refractive index of relatedlens, a total optical length TTL (an total optical length from an objectside surface of the first lens to an image surface of the camera opticallens along the optical axis) of the camera optical lens 10, an on-axisthickness and a curvature radius of each lens satisfy the aboveconditions, the camera optical lens 10 has an advantage of highperformance and satisfies a design requirement of low TTL.

In an embodiment, the object-side surface of the first lens L1 is convexin a paraxial region, the image-side surface of the first lens L1 isconcave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of an object-side surface of the first lens L1 isdefined as R1, a curvature radius of an image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of −5.75≤(R1+R2)/(R1−R2)≤−1.10. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.59≤(R1+R2)/(R1−R2)≤−1.38.

An on-axis thickness of the first lens L1 is defined as d1, a totaloptical length from the object side surface of the first lens L1 to theimage surface Si of the camera optical lens along an optical axis isdefined as TTL, and the camera optical lens 10 further satisfies acondition of 0.05≤d1/TTL≤0.19. This can facilitate achieving ultra-thinlenses. Preferably, the camera optical lens 10 further satisfies acondition of 0.09≤d1/TTL≤0.15.

In an embodiment, an object-side surface of the second lens L2 is convexin the proximal region, and has a refractive power.

A focal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of −5.42≤f2/f≤8.29. Bycontrolling a refractive power of the second lens L2 within a reasonablerange, correction of the aberration of the optical system can befacilitated. Preferably, the camera optical lens 10 further satisfies acondition of −3.39≤f2/f≤6.63.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −5.28≤(R3+R4)/(R3−R4)≤2.30, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof an axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.30≤(R3+R4)/(R3−R4)≤1.84.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.02≤d3/TTL≤0.11. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d3/TTL≤0.09.

In an embodiment, an object-side surface of the third lens L3 is convexin the proximal region, an image-side surface of the third lens L3 isconcave in the proximal region, and the third lens L3 has a refractivepower.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −9.13≤f3/f≤6.91. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −5.71≤f3/f≤5.53.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of −33.45≤(R5+R6)/(R5−R6)≤13.22. This caneffectively control a shape of the third lens L3, thereby facilitatingshaping of the third lens and avoiding bad shaping and generation ofstress due to an the overly large surface curvature of the third lensL3. Preferably, the camera optical lens 10 further satisfies a conditionof −20.91≤(R5+R6)/(R5−R6)≤10.58.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.02≤d5/TTL≤0.06. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.03≤d5/TTL≤0.05.

In an embodiment, an object-side surface of the fourth lens L4 is convexin the proximal region, and the fourth lens L4 has a positive refractivepower.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of 1.18≤f4/f≤26.21. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and the lower sensitivity.Preferably, the camera optical lens 10 further satisfies a condition of1.88≤f4/f≤20.97.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of −6.30≤(R7+R8)/(R7−R8)≤1.17, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would easily correcting a problem like anoff-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.94≤(R7+R8)/(R7−R8)≤0.94.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.17, which fixes a ratio of the on-axis thickness of thefourth lens L4 and the total optical length TTL of the camera opticallens 10. This can facilitate achieving ultra-thin lenses. Preferably,the camera optical lens 10 further satisfies a condition of0.07≤d7/TTL≤0.14.

In an embodiment, an object-side surface of the fifth lens L5 is concavein the proximal region, an image-side surface of the fifth lens L5 isconvex in the proximal region, and the fifth lens L5 has a refractivepower.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of −7.56≤f5/f≤67.75, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of −4.72≤f5/f≤54.20.

A curvature radius of the object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of −8888.00≤(R9+R10)/(R9−R10)≤−3.27, whichspecifies a shape of the fifth lens L5. Within this range, a developmenttowards ultra-thin and wide-angle lenses can facilitate correcting aproblem of the off-axis aberration. Preferably, the camera optical lens10 further satisfies a condition of −5555.00≤(R9+R10)/(R9−R10)≤−4.09.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.02≤d9/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d9/TTL≤0.07.

In an embodiment, an object-side surface of the sixth lens L6 is convexin the proximal region, an image-side surface of the sixth lens L6 isconcave in the proximal region, and the sixth lens L6 has a positiverefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of 0.88≤f6/f≤16.21. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of1.41≤f6/f≤12.97.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of −47.58≤(R11+R12)/(R11−R12)≤−2.15, whichspecifies a shape of the sixth lens L6. Within this range, a developmenttowards ultra-thin and wide-angle lenses would facilitate correcting aproblem like aberration of the off-axis aberration. Preferably, thecamera optical lens 10 further satisfies a condition of−29.74≤(R11+R12)/(R11−R12)≤−2.69.

An on-axis thickness of the sixth lens L6 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.05≤d11/TTL≤0.16. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.07≤d11/TTL≤0.13.

In an embodiment, an image-side surface of the seventh lens L7 isconcave in the proximal region, and the seventh lens L7 has a negativerefractive power.

A focal length of the seventh lens L7 is defined as f7, and the cameraoptical lens 10 further satisfies a condition of −63.40≤f7/f≤−0.61. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of−39.63≤f7/f≤−0.76.

An on-axis thickness of the seventh lens L7 is defined as d13, and thecamera optical lens 10 further satisfies a condition of0.06≤d13/TTL≤0.26. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.10≤d13/TTL≤0.21.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.05 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 5.78 mm.

In an embodiment, the camera optical lens 10 has a large aperture, andan F number of the camera optical lens 10 is less than or equal to 1.71.The camera optical lens 10 has a better imaging performance. Preferably,the F number of the camera optical lens 10 is less than or equal to1.68.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens to the image surface of the camera opticallens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd νd S1 ∞ d0= −0.382 R1 2.015 d1= 0.601 nd1 1.5441 ν1 55.93R2 4.164 d2= 0.161 R3 4.534 d3= 0.418 nd2 1.5441 ν2 55.93 R4 −198.420d4= 0.025 R5 4.669 d5= 0.228 nd3 1.6713 ν3 19.24 R6 2.654 d6= 0.462 R720.371 d7= 0.478 nd4 1.5441 ν4 55.93 R8 39.331 d8= 0.103 R9 −4.443 d9=0.333 nd5 1.7174 ν5 29.62 R10 −4.445 d10= 0.157 R11 2.192 d11= 0.532 nd61.5441 ν6 55.93 R12 4.162 d12= 0.592 R13 −20.286 d13= 0.689 nd7 1.7174ν7 29.62 R14 3.427 d14= 0.300 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.211

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of the object-side surface of the sixth lens L6;

R12: curvature radius of the image-side surface of the sixth lens L6;

R13: curvature radius of the object-side surface of the seventh lens L7;

R14: curvature radius of the image-side surface of the seventh lens L7;

R15: curvature radius of an object-side surface of the optical filterGF;

R16: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lens;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the seventh lens L7;

d13: on-axis thickness of the seventh lens L7;

d14: on-axis distance from the image-side surface of the seventh lens L7to the object-side surface of the optical filter GF;

d15: on-axis thickness of the optical filter GF;

d16: on-axis distance from the image-side surface to the image surfaceof the optical filter GF;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

nd7: refractive index of the d line of the seventh lens L7;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 −6.8178E−02 −7.1462E−03 −7.2264E−03 6.1334E−03−6.5541E−03 1.4054E−03 0.0000E+00 0.0000E+00 R2 −1.4899E+01 −2.9525E−02−1.0310E−02 7.0167E−03  0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 R3−7.8809E+00 −5.4962E−02 −1.8053E−02 3.6336E−02 −1.0096E−02 0.0000E+000.0000E+00 0.0000E+00 R4 −1.0000E+01 −4.9215E−02  1.6473E−02−4.8998E−03  −7.7730E−04 0.0000E+00 0.0000E+00 0.0000E+00 R5 −3.5162E−02−6.2431E−02  4.4816E−02 −6.5884E−02   4.1996E−02 −7.8264E−03  0.0000E+000.0000E+00 R6  2.7756E+00 −6.3488E−02  1.9265E−02 −3.6151E−02  1.9971E−02 −1.3852E−03  0.0000E+00 0.0000E+00 R7  1.0000E+01−5.0629E−02  1.3110E−02 −4.1495E−02   5.4634E−02 −5.4013E−02  1.8706E−020.0000E+00 R8 −5.0000E+01  6.7043E−03 −1.2631E−01 7.6780E−02 −2.5515E−023.1454E−03 3.4263E−04 0.0000E+00 R9  4.2422E+00  7.3806E−02 −1.4635E−012.2287E−02  1.1704E−01 −9.3236E−02  2.8546E−02 −3.3128E−03  R10−8.4124E+00 −5.4532E−02 −2.8880E−02 1.4572E−02  3.5297E−02 −2.4808E−02 5.7853E−03 −4.5926E−04  R11 −2.7262E−01 −7.3722E−02 −2.4331E−021.9750E−02 −9.8091E−03 2.2788E−03 −1.8166E−04  0.0000E+00 R12−1.1377E+00  5.1582E−02 −7.3778E−02 3.4769E−02 −1.0404E−02 1.9617E−03−2.1103E−04  9.7450E−06 R13 −1.0000E+01 −9.0165E−02  1.9631E−022.7293E−03 −1.8419E−03 3.2706E−04 −2.6136E−05  8.0231E−07 R14−4.2966E−01 −9.2729E−02  2.6200E−02 −6.9505E−03   1.3126E−03−1.4836E−04  8.9427E−06 −2.2205E−07 

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A0x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6; P7R1 and P7R2 represent theobject-side surface and the image-side surface of the seventh lens L7.The data in the column named “inflexion point position” refer tovertical distances from inflexion points arranged on each lens surfaceto the optic axis of the camera optical lens 10. The data in the columnnamed “arrest point position” refer to vertical distances from arrestpoints arranged on each lens surface to the optical axis of the cameraoptical lens 10.

TABLE 3 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 1.195 P1R2 20.625 1.165 P2R1 3 0.545 0.955 1.285 P2R2 0 P3R1 2 0.615 1.055 P3R2 0P4R1 2 0.295 1.195 P4R2 1 0.315 P5R1 2 1.005 1.355 P5R2 2 1.005 1.545P6R1 2 0.695 1.795 P6R2 2 0.905 2.355 P7R1 2 1.575 2.705 P7R2 1 0.585

TABLE 4 Number(s) of arrest points Arrest point position 1 P1R1 0 P1R2 0P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.495 P4R2 1 0.475 P5R1 0 P5R2 11.415 P6R1 1 1.185 P6R2 1 1.465 P7R1 0 P7R2 1 1.125

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nmafter passing the camera optical lens 10 according to Embodiment 1,respectively. FIG. 4 illustrates a field curvature and a distortion witha wavelength of 546 nm after passing the camera optical lens 10according to Embodiment 1. A field curvature S in FIG. 4 is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 2.642 mm, an image height of 1.0H is 3.475 mm, a FOV (field ofview) in a diagonal direction is 75.80°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.429 R1 1.900 d1= 0.605 nd1 1.5441 ν1 55.93R2 4.528 d2= 0.125 R3 7.060 d3= 0.333 nd2 1.5441 ν2 55.93 R4 15.660 d4=0.025 R5 2.797 d5= 0.228 nd3 1.6713 ν3 19.24 R6 2.227 d6= 0.397 R724.252 d7= 0.453 nd4 1.5441 ν4 55.93 R8 −6.991 d8= 0.293 R9 −2.207 d9=0.270 nd5 1.8091 ν5 25.27 R10 −3.338 d10= 0.060 R11 3.259 d11= 0.508 nd61.5441 ν6 55.93 R12 3.545 d12= 0.275 R13 2.682 d13= 0.943 nd7 1.8830 ν740.76 R14 2.189 d14= 0.300 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.476

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 −1.3511E−01 −3.9698E−03 1.5002E−03 −3.1782E−03 0.0000E+000.0000E+00 0.0000E+00 0.0000E+00 R2 −1.2340E+00 −2.4161E−02 −1.5063E−02  1.0208E−02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 R3  9.9999E+00−7.3558E−03 −4.3247E−02   3.9059E−02 −1.0367E−02  0.0000E+00 0.0000E+000.0000E+00 R4  1.0000E+01 −4.4128E−02 2.0203E−02 −1.5959E−02 2.8748E−030.0000E+00 0.0000E+00 0.0000E+00 R5 −5.3029E+00 −9.1391E−02 4.1494E−02−2.7858E−02 1.3943E−02 0.0000E+00 0.0000E+00 0.0000E+00 R6  2.0135E+00−9.7318E−02 8.3116E−03 −2.2416E−03 1.6979E−03 0.0000E+00 0.0000E+000.0000E+00 R7 −7.2578E+00 −1.5787E−02 −5.2568E−03  −5.0159E−027.8936E−02 −6.8151E−02  2.0490E−02 0.0000E+00 R8 −1.2941E+01 −4.2637E−02−1.7852E−02   1.4040E−02 −1.5917E−02  5.5861E−03 0.0000E+00 0.0000E+00R9  8.9441E−01 −7.3357E−02 9.8503E−02 −8.3394E−02 7.6282E−02−3.3533E−02  6.9623E−03 −7.2237E−04  R10 −1.8922E+00 −1.5385E−011.4445E−01 −1.0761E−01 6.6965E−02 −2.1290E−02  2.4732E−03 0.0000E+00 R11 4.8632E−01 −5.8410E−02 1.5935E−02 −1.2883E−02 2.0634E−03 2.4571E−04−5.1402E−05  0.0000E+00 R12 −4.2578E−01 −3.2663E−02 2.0643E−02−1.6080E−02 5.7461E−03 −1.0923E−03  1.0688E−04 −4.1810E−06  R13−4.0633E−01 −1.5466E−01 4.8968E−02 −8.4789E−03 6.0093E−04 2.3602E−05−5.9382E−06  2.4181E−07 R14 −5.7430E−01 −1.3124E−01 4.3900E−02−1.2386E−02 2.2884E−03 −2.5528E−04  1.5496E−05 −3.9446E−07 

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 2 0.7950.935 P2R1 1 1.185 P2R2 1 0.375 P3R1 2 0.595 0.995 P3R2 0 P4R1 1 0.405P4R2 1 1.315 P5R1 2 1.005 1.295 P5R2 2 1.045 1.475 P6R1 2 0.755 1.785P6R2 2 1.035 2.305 P7R1 3 0.505 2.135 2.805 P7R2 1 0.665

TABLE 8 Number of arrest points Arrest point position 1 P1R1 0 P1R2 0P2R1 0 P2R2 1 0.665 P3R1 0 P3R2 0 P4R1 1 0.625 P4R2 0 P5R1 0 P5R2 0 P6R11 1.195 P6R2 1 1.645 P7R1 1 1.005 P7R2 1 1.405

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and436 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates afield curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 2.53 mm, an image height of 1.0H is 3.475 mm, a FOV (field of view)in the diagonal direction is 78.20. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.422 R1 1.909 d1= 0.689 nd1 1.5441 ν1 55.93R2 7.733 d2= 0.073 R3 23.225 d3= 0.250 nd2 1.5441 ν2 55.93 R4 4.886 d4=0.074 R5 2.013 d5= 0.228 nd3 1.6713 ν3 19.24 R6 2.269 d6= 0.387 R748.753 d7= 0.634 nd4 1.5441 ν4 55.93 R8 −6.037 d8= 0.191 R9 −2.046 d9=0.315 nd5 2.1020 ν5 16.79 R10 −2.501 d10= 0.072 R11 3.034 d11= 0.574 nd61.5441 ν6 55.93 R12 3.962 d12= 0.540 R13 4.093 d13= 0.697 nd7 2.0220 ν729.06 R14 2.161 d14= 0.300 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞d16= 0.266

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1 −2.4690E−01  −2.2384E−03  3.1897E−03 −4.3502E−030.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 R2 6.6135E+00 −2.4160E−02−6.6126E−03  6.2525E−03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 R31.0000E+01  1.5974E−02 −2.5275E−02  2.1438E−02 −6.0035E−03  0.0000E+000.0000E+00 0.0000E+00 R4 −4.1436E+00  −6.8410E−02  5.1862E−02−4.6505E−02 1.2389E−02 0.0000E+00 0.0000E+00 0.0000E+00 R5 −1.0000E+01  1.7167E−02 −1.0240E−01  4.5327E−02 3.4345E−03 0.0000E+00 0.0000E+000.0000E+00 R6 2.1521E+00 −5.2640E−02 −6.9002E−02  3.5804E−02 0.0000E+000.0000E+00 0.0000E+00 0.0000E+00 R7 1.0000E+01 −7.5895E−03 −2.4931E−02 2.1142E−02 −2.3349E−02  5.3684E−03 0.0000E+00 0.0000E+00 R8 5.7628E+00−1.1457E−01  6.6983E−02 −3.6386E−02 5.0709E−03 1.3360E−03 0.0000E+000.0000E+00 R9 6.2791E−01 −1.2995E−01  2.2462E−01 −1.9011E−01 1.0683E−01−2.9315E−02  2.8443E−03 0.0000E+00 R10 −4.1275E+00  −1.2143E−01 1.3971E−01 −1.1215E−01 5.9478E−02 −1.5943E−02  1.6053E−03 0.0000E+00R11 7.0816E−01 −9.8840E−03 −2.7277E−02  5.2702E−03 −1.6266E−03 5.1545E−04 −5.2560E−05  0.0000E+00 R12 2.1157E−01  3.0928E−02−2.8916E−02  5.3897E−03 3.5517E−05 −1.7565E−04  2.5869E−05 −1.1878E−06 R13 2.3775E−01 −1.3577E−01  4.0041E−02 −6.7927E−03 7.1968E−04−4.8373E−05  2.0467E−06 −4.6417E−08  R14 −5.9986E−01  −1.5962E−01 6.0336E−02 −1.8263E−02 3.4614E−03 −3.7901E−04  2.1959E−05 −5.2408E−07 

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 2 0.6850.975 P2R1 1 1.205 P2R2 1 0.595 P3R1 2 0.605 0.995 P3R2 0 P4R1 1 0.355P4R2 1 1.345 P5R1 2 1.085 1.295 P5R2 2 1.115 1.505 P6R1 2 0.845 1.875P6R2 2 1.075 2.385 P7R1 3 0.425 1.795 2.915 P7R2 3 0.595 2.325 3.055

TABLE 12 Number of Arrest point Arrest point Arrest point arrest pointsposition 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 0 P2R2 1 0.965 P3R10 P3R2 0 P4R1 1 0.555 P4R2 0 P5R1 0 P5R2 0 P6R1 1 1.305 P6R2 1 1.735P7R1 3 0.775 2.815 2.985 P7R2 1 1.235

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and436 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates afield curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 30 accordingto Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 2.53 mm, an image height of 1.0H is 3.475 mm, a FOV (field of view)in the diagonal direction is 78.20°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 4.386 4.200 4.200 f1 6.505 5.539 4.453 f2 8.118 23.209 −11.379 f3−9.482 −19.182 19.347 f4 76.650 9.982 9.872 f5 198.107 −8.927 −15.869 f67.734 45.384 19.466 f7 −4.006 −133.141 −5.438 f12 3.835 4.563 6.520 FNO1.66 1.66 1.66 f1/f 1.48 1.32 1.06 n5 1.72 1.81 2.10 f3/f4 −0.12 −1.921.96 (R13 + R14)/ 0.71 9.88 3.24 (R13 − R14) n7 1.72 1.88 2.02

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens; a second lens; a third lens; afourth lens; a fifth lens; a sixth lens; and a seventh lens; wherein thecamera optical lens satisfies following conditions:1.00≤f1/f≤1.50;1.70≤n5≤2.20;−2.00≤f3/f4≤2.00;0.50≤(R13+R14)/(R13−R14)≤10.00; and1.70≤n7≤2.20; where f denotes a focal length of the camera optical lens;f1 denotes a focal length of the first lens; f3 denotes a focal lengthof the third lens; f4 denotes a focal length of the fourth lens; n5denotes a refractive index of the fifth lens; n7 denotes a refractiveindex of the seventh lens; R13 denotes a curvature radius of theobject-side surface of the seventh lens; and R14 denotes a curvatureradius of the image-side surface of the seventh lens.
 2. The cameraoptical lens according to claim 1 further satisfying followingconditions:1.03≤f1/f≤1.49;1.71≤n5≤2.15;−1.96≤f3/f4≤1.98;0.61≤(R13+R14)/(R13−R14)≤9.94; and1.71≤n7≤2.11.
 3. The camera optical lens according to claim 1, whereinthe first lens has a positive refractive power, and comprises anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region; and the camera opticallens further satisfies following conditions:−5.75≤(R1+R2)/(R1−R2)≤−1.10;0.05≤d1/TTL≤0.19; where R1 denotes a curvature radius of the object-sidesurface of the first lens; R2 denotes a curvature radius of theimage-side surface of the first lens; d1 denotes an on-axis thickness ofthe first lens; and TTL denotes a total optical length from theobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 4. The camera optical lens accordingto claim 3 further satisfying following conditions:−3.59≤(R1+R2)/(R1−R2)≤−1.38; and0.09≤d1/TTL≤0.15.
 5. The camera optical lens according to claim 1,wherein the second lens has a refractive power, and comprises anobject-side surface being convex in a paraxial region; and the cameraoptical lens further satisfies following conditions:−5.42≤f2/f≤8.29;−5.28≤(R3+R4)/(R3−R4)≤2.30; and0.02≤d3/TTL≤0.11; where f2 denotes a focal length of the second lens; R3denotes a curvature radius of the object-side surface of the secondlens; R4 denotes a curvature radius of the image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length from the object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 6. The camera optical lens according to claim 5 further satisfyingfollowing conditions:−3.39≤f2/f≤6.63;−3.30≤(R3+R4)/(R3−R4)≤1.84; and0.04≤d3/TTL≤0.09.
 7. The camera optical lens according to claim 1,wherein the third lens comprises an object-side surface being convex ina paraxial region, an image-side surface being concave in the paraxialregion, and has a refractive power, and the camera optical lens furthersatisfies following conditions:−9.13≤f3/f≤6.91;−33.45≤(R5+R6)/(R5−R6)≤13.22; and0.02≤d5/TTL≤0.06; where R5 denotes a curvature radius of the object-sidesurface of the third lens; R6 denotes a curvature radius of theimage-side surface of the third lens; d5 denotes an on-axis thickness ofthe third lens; and TTL denotes a total optical length from theobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 8. The camera optical lens accordingto claim 7 further satisfying following conditions:−5.71≤f3/f≤5.53;−20.91≤(R5+R6)/(R5−R6)≤10.58; and0.03≤d5/TTL≤0.05.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a positive refractive power, and comprisesan object-side surface being convex in a paraxial region, and the cameraoptical lens further satisfies following conditions:1.18≤f4/f≤26.21;−6.30≤(R7+R8)/(R7−R8)≤1.17; and0.04≤d7/TTL≤0.17; where R7 denotes a curvature radius of the object-sidesurface of the fourth lens; R8 denotes a curvature radius of theimage-side surface of the fourth lens; d7 denotes an on-axis thicknessof the fourth lens; and TTL denotes a total optical length from theobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 10. The camera optical lensaccording to claim 9 further satisfying following conditions:1.88≤f4/f≤20.97;−3.94≤(R7+R8)/(R7−R8)≤0.94; and0.07≤d7/TTL≤0.14.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a refractive power, and comprises anobject-side surface being concave in the paraxial region and animage-side surface being convex in the paraxial region, and the cameraoptical lens further satisfies following conditions:−7.56≤f5/f≤67.75;−8888.00≤(R9+R10)/(R9−R10)≤−3.27; and0.02≤d9/TTL≤0.09; where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of the object-side surface of the fifth lens;R10 denotes a curvature radius of the image-side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 12.The camera optical lens according to claim 11 further satisfyingfollowing conditions:−4.72≤f5/f≤54.20;−5555.00≤(R9+R10)/(R9−R10)≤−4.09; and0.04≤d9/TTL≤0.07.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a negative positive power, and comprises anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region, and the camera opticallens further satisfies following conditions:0.88≤f6/f≤16.21;−47.58≤(R11+R12)/(R11−R12)≤−2.15; and0.05≤d11/TTL≤0.16; where f6 denotes a focal length of the sixth lens;R11 denotes a curvature radius of the object-side surface of the sixthlens R12 denotes a curvature radius of the image-side surface of thesixth lens; d1 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length from the object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 14. The camera optical lens according to claim 13 furthersatisfying following conditions:1.41≤f6/f≤12.97;−29.74≤(R11+R12)/(R11−R12)≤−2.69; and0.07≤d11/TTL≤0.13.
 15. The camera optical lens according to claim 1,wherein the seventh lens has a negative positive power, and comprises animage-side surface being concave in the paraxial region, and the cameraoptical lens further satisfies following conditions:−63.40≤f7/f≤−0.61; and0.06≤d13/TTL≤0.26; where f7 denotes a focal length of the seventh lens;d13 denotes an on-axis thickness of the seventh lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 16.The camera optical lens according to claim 15 further satisfyingfollowing condition:−39.63≤f7/f≤−0.76; and0.10≤d13/TTL≤0.21.
 17. The camera optical lens according to claim 1,where a total optical length TTL from the object-side surface of thefirst lens to an image surface of the camera optical lens along anoptical axis is less than or equal to 6.05 mm.
 18. The camera opticallens according to claim 17, wherein the total optical length TTL of thecamera optical lens is less than or equal to 5.78 mm.
 19. The cameraoptical lens according to claim 1, wherein an F number of the cameraoptical lens is less than or equal to 1.71.
 20. The camera optical lensaccording to claim 19, wherein the F number of the camera optical lensis less than or equal to 1.68.